floxif | b0317d04cea216c71968feec3a7cbed54a1a8ed27b687c4f98c5be0952eddd8b

General

Target

b0317d04cea216c71968feec3a7cbed54a1a8ed27b687c4f98c5be0952eddd8bN.exe
Size

1.4MB
MD5

57ec0f36f5e75cc1db4661544f29b7a0
SHA1

5bf518f39b7397df82015e8eb932d155c039333b
SHA256

b0317d04cea216c71968feec3a7cbed54a1a8ed27b687c4f98c5be0952eddd8b
SHA512

d648382fc598bc1fd30deff94443161265d88d0ae895e39bef647da57938b718a79791aebccf21e98826bbbae855020977d7a0903d2b0c5996a201428304eb47
SSDEEP

12288:CVq0SA9h1SxfJ4yb+QdIKYKNCJKHZDgdVw8XkLavV2Q9yW+GGYT7SLHBjvrEH7TU:Mpb1SxfJ4yL/tNCJPXUQrP4FrEH7w

Score

10^/10

floxif backdoor discovery persistence privilege_escalation trojan upx

Malware Config

Signatures

Floxif family
floxif
Floxif, Floodfix
Floxif aka FloodFix is a file-changing trojan and backdoor written in C++.
backdoor trojan floxif

Detects Floxif payload 1 IoCs

backdoor

resource	yara_rule
behavioral1/files/0x0007000000012117-2.dat	floxif

Event Triggered Execution: AppInit DLLs 1 TTPs
Adversaries may establish persistence and/or elevate privileges by executing malicious content triggered by AppInit DLLs loaded into processes.
persistence privilege_escalation

AppInit DLLs
T1546.010

ACProtect 1.3x - 1.4x DLL software 1 IoCs

Detects file using ACProtect software.

resource	yara_rule
behavioral1/files/0x0007000000012117-2.dat	acprotect

Loads dropped DLL 2 IoCs

pid	Process
1932	b0317d04cea216c71968feec3a7cbed54a1a8ed27b687c4f98c5be0952eddd8bN.exe
2356	schtasks.exe

UPX packed file 5 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral1/memory/1932-4-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral1/files/0x0007000000012117-2.dat	upx
behavioral1/memory/1932-20-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral1/memory/2356-23-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral1/memory/2356-25-0x0000000010000000-0x0000000010030000-memory.dmp	upx

Drops file in Program Files directory 1 IoCs

description	ioc	Process
File created	C:\Program Files\Common Files\System\symsrv.dll	b0317d04cea216c71968feec3a7cbed54a1a8ed27b687c4f98c5be0952eddd8bN.exe

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	b0317d04cea216c71968feec3a7cbed54a1a8ed27b687c4f98c5be0952eddd8bN.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1932	b0317d04cea216c71968feec3a7cbed54a1a8ed27b687c4f98c5be0952eddd8bN.exe
Token: SeDebugPrivilege	2356	schtasks.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1932 wrote to memory of 2356	1932	b0317d04cea216c71968feec3a7cbed54a1a8ed27b687c4f98c5be0952eddd8bN.exe	30
PID 1932 wrote to memory of 2356	1932	b0317d04cea216c71968feec3a7cbed54a1a8ed27b687c4f98c5be0952eddd8bN.exe	30
PID 1932 wrote to memory of 2356	1932	b0317d04cea216c71968feec3a7cbed54a1a8ed27b687c4f98c5be0952eddd8bN.exe	30
PID 1932 wrote to memory of 2356	1932	b0317d04cea216c71968feec3a7cbed54a1a8ed27b687c4f98c5be0952eddd8bN.exe	30

C:\Users\Admin\AppData\Local\Temp\b0317d04cea216c71968feec3a7cbed54a1a8ed27b687c4f98c5be0952eddd8bN.exe
"C:\Users\Admin\AppData\Local\Temp\b0317d04cea216c71968feec3a7cbed54a1a8ed27b687c4f98c5be0952eddd8bN.exe"
1⤵
- Loads dropped DLL
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1932
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /delete /tn "SmadavSecondaryUpdater" /f
  2⤵
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  PID:2356

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Event Triggered Execution

1

T1546

AppInit DLLs

1

T1546.010

Privilege Escalation

Event Triggered Execution

1

T1546

AppInit DLLs

1

T1546.010

Defense Evasion

Credential Access

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

\Program Files\Common Files\System\symsrv.dll

Filesize
67KB

MD5
7574cf2c64f35161ab1292e2f532aabf

SHA1
14ba3fa927a06224dfe587014299e834def4644f

SHA256
de055a89de246e629a8694bde18af2b1605e4b9b493c7e4aef669dd67acf5085

SHA512
4db19f2d8d5bc1c7bbb812d3fa9c43b80fa22140b346d2760f090b73aed8a5177edb4bddc647a6ebd5a2db8565be5a1a36a602b0d759e38540d9a584ba5896ab

Download Submit
memory/1932-4-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/1932-1-0x0000000000400000-0x00000000005EC000-memory.dmp

Filesize
1.9MB

Download
memory/1932-6-0x0000000002B10000-0x0000000002B77000-memory.dmp

Filesize
412KB

Download
memory/1932-14-0x0000000000408000-0x000000000040B000-memory.dmp

Filesize
12KB

Download
memory/1932-13-0x0000000002B10000-0x0000000002B77000-memory.dmp

Filesize
412KB

Download
memory/1932-20-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/1932-19-0x0000000000400000-0x00000000005EC000-memory.dmp

Filesize
1.9MB

Download
memory/2356-23-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/2356-25-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download

Analysis

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